Activate Emry by tapping it, allowing you to cast Lion's Eye Diamond from your graveyard.
Cast Lion's Eye Diamond by paying 0.
Displacer Kitten triggers, blinking Emry.
When Emry enters, it triggers, causing you to mill four cards.
Activate Lion's Eye Diamond by discarding your hand and sacrificing it.
Repeat.
This cunning loop revolves around Emry, Lurker of the Loch pulling Lion's Eye Diamond straight out of your graveyard, fueling your mana pool while setting up an endless cycle. Every time you recast that zero-mana artifact, Displacer Kitten springs into action to blink Emry, resetting her tap ability and triggering fresh self-mill. Meanwhile, Tyvar, Jubilant Brawler pulls double duty: his static ability grants Emry the haste she needs to tap immediately upon entering the battlefield, and his minus ability can even fish her out of the graveyard if things go awry.